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Metal PTC electric heating tube component of air conditioner and manufacturing method thereof

A technology of electric heating tube and manufacturing method, which is applied in the direction of heating element shape, etc., can solve problems such as unreasonable structure, and achieve the effects of long working life, long heating life, and small power attenuation

Inactive Publication Date: 2009-12-16
ZHEJIANG ZHENGLIANG ELECTRONICS & ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its heating element is a metal PTC tube, and the inner cavity of the metal PTC tube is filled with thermally conductive insulating powder, and the cavity between the metal PTC tube and the heat dissipation tube is evenly filled with thermally conductive insulating powder, and the structure is not very reasonable.

Method used

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  • Metal PTC electric heating tube component of air conditioner and manufacturing method thereof
  • Metal PTC electric heating tube component of air conditioner and manufacturing method thereof

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Embodiment Construction

[0047] The present invention will be described again below in conjunction with embodiment and accompanying drawing thereof

[0048] see figure 1 , an air-conditioning metal PTC electric heating tube assembly, the wound PTC heating wire 2 with inherent conductive rod 1 at both ends is placed in the center of copper-plated iron pipe 3, and the conductive rod 1 at both ends of the wound PTC heating wire 2 is partly copper-plated Outside the iron pipe 3, the inside of the copper-plated iron pipe 3 is filled with magnesium oxide powder 4 as a heat-conducting insulating powder, and the wound PTC heating wire 2 is tightly pressed in the center of the magnesium oxide powder 4 in the copper-plated iron pipe 3, and the copper-plated iron pipe 3 There are several aluminum tubes 7 of aluminum cooling fins 6 in the jacket of the expansion sleeve, that is, the copper-plated iron tube 3 is closely matched with the aluminum tube 7, the aluminum tube 7 is closely matched with the aluminum heat...

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Abstract

The invention discloses a metal PTC electric heating tube component of an air conditioner. A wound PTC heating filament of which two ends are sleeved and fixed with a conductive bar respectively, is placed in the center of a copper-plated iron pipe; a part of the conductive bars at two ends of the wound PTC heating filament is positioned outside the copper-plated iron pipe; magnesium oxide powder as heat conducting and insulating powder is filled in the copper-plated iron pipe; the wound PTC heating filament is tightly pressed in the center of the magnesium oxide powder in the copper-plated iron pipe; an aluminum pipe of a plurality of aluminum radiating fins is sleeved outside an expansion sleeve of the copper-plated iron pipe, namely the copper-plated iron pipe is tightly matched with the aluminum pipe, and the aluminum pipe is tightly matched with the aluminum radiating fins; and pipe orifices at two ends of the copper-plated iron pipe are sealed by silicon rubber and then sleeved into a porcelain head. The metal PTC electric heating tube component has the advantages of reasonable structure and better safety performance and durability. A manufacturing method for the component comprises the following steps: cutting the pipe, grinding the pipe, drilling the pipe, cleaning, winding wires, cleaning, drying, threading, measuring wires, spot welding, filling, stuffing a film, measuring withstood voltage, contracting the pipe, detecting the length of the pipe, middle inspection, peeling, pulling out colloidal particles, cutting a pin, straightening, inversing pipe angles, expanding the pipe, sealing, measuring the withstood voltage, measuring insulation, and measuring resistance.

Description

technical field [0001] The invention relates to an air conditioner metal PTC electric heating tube assembly and a manufacturing method thereof. Background technique [0002] The vast majority of air conditioners are bidirectional, that is, they can both cool and heat. However, due to the limitation of the heating cycle itself, the working efficiency of heating is not as high as that of cooling, especially in cold regions. Therefore, an auxiliary electric heater is often required. At present, most of the auxiliary electric heaters for air conditioners are nickel-chromium wires or non-insulated PTC (the so-called PTC is the abbreviation of Positive Temperature Coefficient, which means positive temperature coefficient of resistance, and the resistance value increases with the rise) electric heating tubes. Nickel-chromium wire electric heating tubes are difficult to match the service life of air conditioners due to their poor reliability and short product life; non-insulated PT...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/50H05B3/52
Inventor 郑昌贵张锋周国忠
Owner ZHEJIANG ZHENGLIANG ELECTRONICS & ELECTRICAL
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